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hi.todd & wet_boots, I capped one of the 4 Rain Bird
5000 heads and the pressure increased to 30 psi. I am now going to replace all
four nozzles in the zone. They are the original 3.0, do you have any
recommendations for replacement nozzles. Perhaps I should try 2.0 rain curtain
nozzles?

Sight unseen, your system does not have the pressure that is needed for a single head to cover every bit of its 'territory' ~ modern design practice is to space sprinklers head to head, so that at least one other sprinkler makes up for any other sprinkler head's shortcomings.

The solutions have already been given - change every head nozzle in the zone to a size smaller - now the zone consumes less water, and the heads will have higher pressure, and higher pressure can improve the close-in coverage of heads.

The 42SA is the same thing as a 5000 - just a different label

The clumsy old Maxipaw impact head is a throwback to times when head to head layouts were uncommon - all its moving parts splash enough water around to give it superior close-in coverage - a Maxipaw can give better low-pressure performance than any gear-driven rotor like a 5000

If I could achieve ( Distribution Uniformity) @35' it would be good but the 5000 shoots right over the closer in grass and hits the shrubs @ 35' but misses the closer in grass perhaps the 42SA might work better?http://store.rainbird.com/product/detail/W42003.aspx

[url='http://store.rainbird.com/product/detail/W
That rain bird nozzle is a pretty even DU ( Distribution Uniformity) . It's actually designed to work just fine fully open and shoot 35'. However, that is in conjunction with a properly designed system with overlap ( Head to head coverage) .. If the design is off then yes there will be coverage issues.
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That rain bird nozzle is a pretty even DU ( Distribution Uniformity) . It's actually designed to work just fine fully open and shoot 35'. However, that is in conjunction with a properly designed system with overlap ( Head to head coverage) .. If the design is off then yes there will be coverage issues.